PROBLEM TO BE SOLVED: To provide a display position adjustment unit that suppresses the virtual image display position of a displayed optical image from slipping off.SOLUTION: A display position adjustment unit comprises: a reduction gear mechanism consisting of transmission gears that are engaged and linked with each other in order to reduce the revolution of a stepping motor and transmit it to a revolving shaft; a first elastic member for increasing a first restoring force F1 for urging the revolving shaft to a reverse rotation direction Dr in a rotation drive range A as the revolving shaft rotates in normal direction from an initial rotation position R0; and a second elastic member for reducing a second restoring force F2 for urging the revolving shaft to a normal rotation direction Dn in the rotation drive range A as the revolving shaft rotates in normal direction from an initial rotation position R0. The first elastic member and the second elastic member are set to such a state that the second restoring force F2 is smaller than the first restoring force F1 at the initial rotation position R0.SELECTED DRAWING: Figure 7

    【課題】表示光像の虚像表示位置がずれるのを抑制する表示位置調整ユニットの提供。【解決手段】ステッピングモータの回転を減速して回転軸に伝達するために、伝達ギア同士が噛合連繋している減速ギア機構と、回転駆動範囲Aにて回転軸を逆回転方向Drへ付勢する第一復原力F1を、初期回転位置R0から回転軸が正回転するに従って増大させる第一弾性部材と、回転駆動範囲Aにて回転軸を正回転方向Dnへ付勢する第二復原力F2を、初期回転位置R0から回転軸が正回転するに従って減少させる第二弾性部材とを、設ける。第一弾性部材と第二弾性部材とは、初期回転位置R0では第一復原力F1よりも第二復原力F2を小さくする状態に、セットされている。【選択図】図7


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    Title :

    DISPLAY POSITION ADJUSTMENT UNIT AND HEAD-UP DISPLAY DEVICE


    Additional title:

    表示位置調整ユニット及びヘッドアップディスプレイ装置


    Contributors:

    Publication date :

    2017-11-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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